3-methyl-isoxazole-5-boronic acid CAS 1190875-27-4
| CAS No. | 1190875-27-4 |
| Molecular Formula | C5H11NO3 |
| Molecular Weight | 133.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-methyl-isoxazole-5-boronic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies 3-methyl-isoxazole-5-boronic acid (CAS 1190875-27-4), a certified reference material (molecular formula C5H11NO3, MW 133.15 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H11NO3, 3-methyl-isoxazole-5-boronic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 133.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H11NO3 |
| Molecular Weight | 133.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 1 |
Related methyl Standards
- Isoxazole-4-carbonyl chloride (CAS 62348-15-6)
- Isoxazole-3-carbothioamide (CAS 886371-53-5)
- Isoxazole-4-carbothioamide (CAS 885274-81-7)
- Isoxazole-4-acetic Acid (CAS 141679-57-4)
- Isoxazole-4-carboxylic acid methyl ester (CAS 15166-81-1)
- Isoxazole-4-carbohydrazide (CAS 885273-78-9)
- Ethyl isoxazole-5-carboxylate (CAS 173850-41-4)
- Ethyl isoxazole-4-carboxylate (CAS 80370-40-7)
Recommended Standards
- 3H-Pyrrolo[2,3-b]pyridin-5-amine (CAS 1187421-28-8)
- 3-ethynyl-2-methoxy-pyridine (CAS 1196145-21-7)
- Methyl D-allothreoninate (CAS 118525-51-2)
- 4-Ethynyl-3-methoxypyridine (CAS 1196146-49-2)
- 2-Methyloctahydro-1H-pyrazino[1,2-a]pyrazine (CAS 63285-62-1)
- 7-Nitroisochroman-1-one (CAS 55104-59-1)
- 2-[(2,4-Dichlorobenzyl)oxy]-3-methoxy-benzoyl chloride (CAS 1160260-33-2)
- Methyl 4-chloro-2-fluoro-5-methoxybenzoate (CAS 146447-09-8)
- 3,7-Dimethyl-4,7-dihydropyrazolo[4,3-d][1,3]oxazin-5(1H)-one (CAS 72499-49-1)
- N-(3-Methoxyphenyl)-2-[4-(5-methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidin-2-yl]acetamide (CAS 1775336-87-2)
- Indometacin Impurity 25 (CAS CATO-C4X-147025)
- 4-Methyl-5-(piperidin-2-yl)pyridin-2(1H)-one (CAS 1270516-28-3)
- 2-(Diethylamino)-5-nitrobenzoic acid (CAS 727718-14-1)
- Peptide Impurity 64 (CAS CATO-CPTD788964)
Why CATO?
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